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Jena LIGHT Conference 2025 cover picture

Program

Jena LIGHT took place from 1-3 December 2025 and featured a program of talks, poster presentations and lab visits as well as social and cultural events.
Jena LIGHT Conference 2025 cover picture
Graphic: modif. Tung Nguyen/Pixabay; Falk Eilenberger

Schedule

Monday, 01.12.2025 ?

10:00-11:00

Arrival and Registration

11:00-11:15

Opening Remarks
Falk Eilenberger (Fraunhofer Institute for Applied Optics and Precision Engineering IOF)

11:15-13:15

Session 1: Advances in Foundry Services

Volker Sorger (University of Florida)
Photonic Chips and Foundry Partnerships for AI and Datacomm

Amir H. Ghadimi (Lightium AG)
Breaking the Bottleneck: High-Volume Manufacturing of TFLN PICs for Telecom & Datacom

Sergii Gudyriev (X-FAB Semiconductor Foundries GmbH)
More than Photonics - Enabling Innovation with Silicon Photonics Heterogeneous platforms in the industry

Tobias Kippenberg (?cole Polytechnique Fédérale de Lausanne)
Next generation integrated photonics

13:15-14:00 Lunch Break
14:00-16:00

Session 2: LNOI for Quantum Applications

Laura Padberg (University of Paderborn)
Thin-film lithium niobate for integrated quantum optics ? ?

Robert Chapman (ETH Zürich)
Integrated quantum photonics on thin film lithium niobate
? ??
Yen Hung Chen (National Central University Taoyuan)
Lithium Niobate Integrated Photonic Sources and Circuits for Quantum Technology

Reinhard Geiss (Fraunhofer Institute for Applied Optics and Precision Engineering IOF)
Towards Wafer-scale Fabrication of Erbium-doped TFLN Photonic Devices

16:00-16:30 Coffee Break
16:30-17:30

Session 3: Contributed I

Kalaga Madhav (Leibniz Institute for Astrophysics Potsdam)
Astrophotonics : PICs for astronomy from ground and space?
? ??
J?rn Epping (Epiphany Design)
Enabling Cross-Platform Design with xPDK?
? ??
Matthias Kaschel (Institut für Mikroelektronik Stuttgart)
PICs for enabling Quantum Applications?

Mario Chemnitz (Leibniz-Institute of Photonic Technology Jena)
Fluid-Photonics: Towards Hybrid Liquid-Solid Material Co-designs to Explore New Guiding Principles in Photonics

17:30-20:00

Posters and Pizza

[Please scroll down to the poster list]

Tuesday, 02.12.2025? ? ? ? ? ? ? ? ?? ?
9:00-11:00

Session 4: Novel Materials

Alex Demkov (La Luce Cristallina)
Barium titanate: the next generation in integrated silicon photonics ? ?

Tim Schr?der (Humboldt University of Berlin & Ferdinand-Braun-Institut)
Integrated Quantum Photonics with the AlGaN/AlN–Diamond platform ? ?

David de Felipe (Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut)
PIC Technologies for Communication, Sensing and Quantum ? ?

Sebastian Schmitt (Fraunhofer Institute for Applied Optics and Precision Engineering IOF)
From Material Property to Quantum Functionality: Tailoring Nonlinear Platforms for Photonic Integration?

11:00-11:30 Coffee Break
11:30-12:30

Session 5: Contributed II

Toby Bi (Max Planck Institute for the Science of Light, Friedrich-Alexander-Universit?t Erlangen-Nürnberg)
Room temperature sputtered silicon nitride for inverse-design and nonlinear optics

Andrea Knigge (Ferdinand-Braun-Institut Berlin)
GaAs-based photonic integration ?

Carsten Ronning (Friedrich Schiller University Jena)
Ion beams for photonic integrated circuits

12:30-13:30 Lunch Break
13:30-15:30

Session 6: Advanced Topics

Florenta Costache (Fraunhofer Institute for Photonic Microsystems)
Perspectives on Photonic Platforms: Liquid-Crystal Devices and Silicon Nitride-Based Sensing

Andreas Fognini (Single Quantum)
SNSPDs at the Frontier: Bridging Quantum Information and Space Exploration

Richard Zeltner (Menlo Systems GmbH)
Emerging applications of integrated photonics in high-precision metrology

Jens Müller (Ilmenau University of Technology)
Glass- and Ceramic-based interposer technologies for photonic electronic co-integration

?15:30-16:00 Coffee Break
?16:00-17:30

Session 7: Contributed III

Maham Ibrar (Friedrich Schiller University Jena & Leibniz Institute of Photonic Technology)
Guiding in chaos: Observing branched flow of light through complex refractive index landscapes in planar waveguides

Daniel Sa Pereira (Bühler Leybold Optics)
Ion Beam Trimming (IBT) and Advanced Coating Technologies: A Unified Approach to Wafer Uniformity for Low-Loss and Scalable PIC Applications?

Juan J. Arango (Friedrich Schiller University Jena)
Four-wave mixing in microring resonators?

Hossein Esfandiar (Fraunhofer IOF Jena)
Material-Agnostic Thin Film Crystal Platforms: Crystal Ion Slicing and Bonding ?

Mario B?hr (CiS Forschungsinstitut für Mikrosensorik GmbH)
Making use of NV color centers in diamond for sensing and quantum computing applications

19:00-22:00

Evening Event

Wednesday, 03.12.2025 ?
9:00-11:00

Session 8: Applications of PICs

Eva Peters (QuiX Quantum B.V.)
Photonics for Quantum Computing
? ??
Anna Selzer (Akhetonics GmbH)
All-Optical Computing - Analog, Digital, Quantum ? ?

Stefan Richter (Carl Zeiss AG)
PICs @ ZEISS – Applications & Solutions

Despoina Petousi (Adtran Networks SE)
Modulator Technologies for Next-Generation Coherent Pluggable Modules?

?11:00-11:15 Coffee Break?
?11:15-13:15

Session 9: Hybrid Integration and Testing

Arnan Mitchell (RMIT University)
Strip-loaded lithium niobate integrated photonic circuits ? ?

Bart Kuyken (Ghent University)
Microtransfer printing as an enabling technology for integrated photonics ? ?

Tobias Gnausch (Jenoptik AG)
Aligning Optical Wafer Probing with Electrical Test Methods – Needs and challenges in silicon photonics testing
? ??
Monika Monika (Fraunhofer IOF)
Photonic Quantum Simulation via On-Chip Waveguide Interference Networks

?13:15-14:00 ?Lunch Break
?14:00-15:00 ?Lab Tours

?

Posters

  • Coupling of Polarized Single Photons into an On-Chip Hybrid Photonic Plasmonic Cavity
    Colin Jacob (Fraunhofer IOF Jena)
  • Dispersion Compensating Silicon Nitride Waveguide Bragg Gratings for Ultrashort Pulse Compression
    Milan Sinobad (DESY Research Centre)
  • Domain Engineering in Thin-Film Lithium Niobate for Quasi-Phase-Matching Devices
    Andres Saenz Perez (Friedrich Schiller University Jena & Fraunhofer IOF Jena)
  • Electro Optic Phase Modulation in UV Regime
    Sanjeet Kumar (University of Heidelberg)
  • Engineering of maximally entangled orbital angular momentum states via path identity
    Richard Bernecker (Friedrich Schiller University Jena)
  • Fabrication of Lithium Niobate on Insulator via Ion Beam Enhanced Etching
    Muhammet Savkliyildiz (Fraunhofer IOF Jena)
  • Fiber-Coupled Waveguide SPDC Sources for Time-Resolved Hong–Ou–Mandel Interference
    Karen Lozano Mendez (Fraunhofer IOF Jena)
  • Fiber-to-Chip Coupling: Active Alignment and Precision Bonding
    Matthew Nagel (Fraunhofer IOF Jena)
  • High-dimensional frequency/time entanglement for quantum communications
    Meritxell Cabrejo Ponce (Fraunhofer IOF Jena)
  • Hybrid Coupled Mode Solvers for Nonlinear Waveguides
    Trevor Vrckovnik (Fraunhofer IOF Jena)
  • Hybrid Integration of van der Waals materials in the SiN plattform
    Sebastian Ritter (Fraunhofer IOF Jena)
  • Integration of microfabricated alkali vapor cells with PICs
    Theo Scholtes (Leibniz Institute of Photonic Technology Jena)
  • Simulation of phase-matching functions with fabrication inhomogeneities in TFLN
    Jonas Babai-Hemati (Paderborn University)
  • Temporal analysis of quantum interference between two MRRs in the CW regime
    Sabine H?ussler (Fraunhofer IOF Jena)

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